Causton police HQ is to lose its most famous resident detective. Actor John Nettles, 65, has announced that he will be leaving Midsomer Murders after 2 more series are made - 16 episodes, his final epsiode scheduled to be screened in 2011.However, the series is apparently set to continue after Nettles leaves.
The original novels, by Caroline Graham, are located in the Chilterns area north-west of London. In The Killings At Badgers Drift, Barnaby's home village is located 30 miles from Slough, infamous for John Betjemin's poem, Heathrow Airport - and of course, David Brent!
The TV series was shot mainly in the counties of Buckinghamshire and Hertfordshire, with many scenes also filmed in Oxfordshire, and as far as Wales and Devon. Here is is great site which gives details and pictures of nearly 200 of the locations used in the shows so far.